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Lightweight blocks
All parts non-corrosive
Anti-Corrosive Immersion Heater Element
and water treatment
Helps prevent the formation of hydrogen gas
Worcester Bosch Single Channel 24-Hour Mechanical Timeswitch Central Heating Treatments Lightweight blocksThis internal boiler control is compatible with all current Greenstar combination gas boilers. This simple device allows you to set the daily times for your central heating, meaning your heating will start and finish at the same times every day if set. This can be controlled by using the teeth on the dial to set heating time periods. 2013 model (Replaced the model that featured a clock with two hands in the centre) Part number: 7716192036 (Part number
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